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IMPORTANT! READ CAREFULLY BEFORE USE. KEEP THIS GUIDE FOR FUTURE REFERENCE. This is a User’s Guide for a series of products. Not all products support all firmware features. Screenshots and graphics in this book may differ slightly from your product due to differences in your product firmware or your computer operating system.
Introduction 1.1 Overview This User’s Guide covers the following models: NSG50 and NSG100. The NSG (Nebula Security Gateway) comes with one or two USB ports for storing the packet capture files and/or diagnostic information in the connected USB storage devices. The NSG’s security features include VPN, firewall, ADP (Anomaly Detection and Protection), and certificates.
• Write down the password and put it in a safe place. 1.4 LEDs Following are LED descriptions for the NSG series models. 1.4.1 NSG50 The following are the LED descriptions for your NSG50. NSG Series User’s Guide...
Chapter 1 Introduction Figure 2 NSG50 LEDs The following table describes the LEDs. Table 1 NSG50 LED Descriptions COLOR STATUS DESCRIPTION The NSG is turned off. Green The NSG is turned on. There is a hardware component failure. Shut down the device, wait for a few minutes and then restart the device.
Chapter 1 Introduction The following table describes the LEDs. Table 2 NSG100 LED Descriptions COLOR STATUS DESCRIPTION The NSG is turned off. Green The NSG is turned on. There is a hardware component failure. Shut down the device, wait for a few minutes and then restart the device.
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Chapter 1 Introduction Type the user name (default: “admin”) and password (default: “1234”). If the NSG is being managed or has been managed by the NCC, check the NCC's Site-Wide > Configure > General setting screen for the NSG's current password. Click Login.
Chapter 1 Introduction 1.5.2 Web Configurator Screens Overview The Web Configurator screen is divided into these parts : • A - title bar • B - navigation panel • C - main window Title Bar Figure 4 Title Bar The title bar icons in the upper right corner provide the following functions. Table 3 Title Bar: Web Configurator Icons LABEL DESCRIPTION...
Chapter 1 Introduction Monitor Menu The monitor menu screens display status and information about the connected USB device. Table 4 Monitor Menu Screens Summary FOLDER OR LINK FUNCTION USB Storage Storage Displays details about USB device connected to the NSG. Information Configuration Menu Use the configuration menu screens to configure the NSG’s features.
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Chapter 1 Introduction • Sort in ascending or descending (reverse) alphabetical order • Select which columns to display • Group entries by field • Show entries in groups • Filter by mathematical operators (<, >, or =) or searching for text Figure 6 Common Table Column Options Select a column heading cell’s right border and drag to re-size the column.
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Chapter 1 Introduction Figure 10 Table Icons Working with Lists When a list of available entries displays next to a list of selected entries, you can often just double-click an entry to move it from one list to the other. In some lists you can also use the [Shift] or [Ctrl] key to select multiple entries, and then use the arrow button to move them to the other list.
H A P T E R Dashboard 2.1 Overview Use the Dashboard screens to check status information about the NSG. 2.1.1 What You Can Do in this Chapter Use the main Dashboard screen to see the NSG’s general device information, system status, and extension slot status.
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Chapter 2 Dashboard Table 7 Dashboard (continued) LABEL DESCRIPTION Close Widget (E) Click this to close the widget. Use Widget Settings to re-open it. Device Information Model Name This field displays the model name of this NSG. Serial Number This field displays the serial number of this NSG. The serial number is used for device tracking and control.
H A P T E R Monitor 3.1 Overview Use the Monitor screens to check status and information about the connected USB device. 3.2 USB Storage Screen This screen displays information about a connected USB storage device. Click Monitor > USB Storage to display this screen.
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Chapter 3 Monitor Table 8 Monitor > System Status > USB Storage (continued) LABEL DESCRIPTION Status Ready - you can have the NSG use the USB storage device. Click Remove Now to stop the NSG from using the USB storage device so you can remove it.
H A P T E R Configuration 4.1 Interface Use the Interface screen to configure the NSG’s WAN interfaces. 4.1.1 Ethernet This screen lists the WAN Ethernet interfaces on the NSG. To access this screen, click Configuration > Interface > Ethernet. You cannot create new Ethernet interfaces nor can you delete any of them.
Chapter 4 Configuration Table 9 Configuration > Interface > Ethernet (continued) LABEL DESCRIPTION Mask This field displays the interface’s subnet mask in dot decimal notation. Reset Click Reset to return the screen to its last-saved settings. 4.1.2 Ethernet Edit The Ethernet Edit screen lets you configure IP address assignment. To access this screen, select an interface and click its Edit icon in the Ethernet screen.
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Chapter 4 Configuration Figure 16 Configuration > Network > Interface > Ethernet > Edit (Ethernet Fixed IP) PPPoE Select PPPoE if you want to connect to the Internet using a dial-up connection. This way, you do not have to install or manage PPPoE software on each computer in the network. •...
Chapter 4 Configuration 4.2 SSH You can use SSH (Secure SHell) to securely access the NSG’s command line interface. Specify from which IP address the access can come. SSH is a secure communication protocol that combines authentication and data encryption to provide secure encrypted communication between two hosts over an unsecured network.
Chapter 4 Configuration Host Identification The SSH client sends a connection request to the SSH server. The server identifies itself with a host key. The client encrypts a randomly generated session key with the host key and server key and sends the result back to the server.
Chapter 4 Configuration The following table describes the labels in this screen. Table 10 Configuration > SSH LABEL DESCRIPTION Allow WAN to Select the check box to allow the computer with the IP address that matches the IP address in Device the Client IP Address field to access the NSG CLI using SSH.
Chapter 4 Configuration Figure 22 SSH Example 2: Test $ telnet 192.168.1.1 22 Trying 192.168.1.1... Connected to 192.168.1.1. Escape character is '^]'. SSH-1.5-1.0.0 Enter “ssh –1 192.168.1.1”. This command forces your computer to connect to the NSG using SSH version 1. If this is the first time you are connecting to the NSG using SSH, a message displays prompting you to save the host information of the NSG.
Chapter 4 Configuration 4.4 USB Storage The NSG can use a connected USB device to store the packet capture files and diagnostic information. Use this screen to turn on this feature and set a disk full warning limit. Note: Only connect one USB device. It must allow writing (it cannot be read-only) and use the FAT16, FAT32, EXT2, or EXT3 file system.
H A P T E R Maintenance 5.1 Diagnostics Overview Use the diagnostics screens for troubleshooting. 5.2 Diagnostics Screen The Diagnostics screen provides an easy way for you to generate a file containing the NSG’s configuration and diagnostic information. You may need to send this file to customer support for troubleshooting.
Chapter 5 Maintenance Table 13 Maintenance > Diagnostics LABEL DESCRIPTION Apply Click Apply to save your changes. Collect Now Click this to have the NSG create a new diagnostic file. Wait while information is collected. 5.2.1 Diagnostics Files Screen Click Maintenance > Diagnostics > Files to open the diagnostic files screen. This screen lists the files of diagnostic information the NSG has collected and stored in the NSG or a connected USB storage device.
Chapter 5 Maintenance 5.3 Packet Capture Screen Use this screen to capture network traffic going through the NSG’s interfaces. Studying these packet captures may help you identify network problems. Click Maintenance > Diagnostics > Packet Capture to open the packet capture screen. Note: New capture files overwrite existing files of the same name.
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Chapter 5 Maintenance Table 15 Maintenance > Diagnostics > Packet Capture (continued) LABEL DESCRIPTION Host IP Select a host IP address object for which to capture packets. Select any to capture packets for all hosts. Select User Defined to be able to enter an IP address. Host Port This field is configurable when you set the IP Type to any, tcp, or udp.
Chapter 5 Maintenance Table 15 Maintenance > Diagnostics > Packet Capture (continued) LABEL DESCRIPTION Capture Click this button to have the NSG capture packets according to the settings configured in this screen. You can configure the NSG while a packet capture is in progress although you cannot modify the packet capture settings.
Chapter 5 Maintenance The following table describes the labels in this screen. Table 16 Maintenance > Diagnostics > Packet Capture > Files LABEL DESCRIPTION Remove Select files and click Remove to delete them from the NSG or the connected USB storage device.
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Chapter 5 Maintenance The following table describes the labels in this screen. Table 17 Maintenance > Diagnostics > Network Tool LABEL DESCRIPTION Network Tool Select PING IPv4 to ping the IP address that you entered. Select TRACEROUTE IPv4 to perform the traceroute function. This determines the path a packet takes to the specified computer.
H A P T E R Troubleshooting This chapter offers some suggestions to solve problems you might encounter. None of the LEDs turn on. Make sure that you have the power cord connected to the NSG and plugged in to an appropriate power source.
Chapter 6 Troubleshooting My packet capture captured less than I wanted or failed. The packet capture screen’s File Size sets a maximum size limit for the total combined size of all the capture files on the NSG, including any existing capture files and any new capture files you generate. If you have existing capture files you may need to set this size larger or delete existing capture files.
• Brief description of the problem and the steps you took to solve it. Corporate Headquarters (Worldwide) Taiwan • Zyxel Communications Corporation • http://www.zyxel.com Asia China • Zyxel Communications (Shanghai) Corp. Zyxel Communications (Beijing) Corp. Zyxel Communications (Tianjin) Corp. • http://www.zyxel.cn India • Zyxel Technology India Pvt Ltd • http://www.zyxel.in Kazakhstan •...
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Appendix A Customer Support Belgium • Zyxel Communications B.V. • http://www.zyxel.com/be/nl/ • http://www.zyxel.com/be/fr/ Bulgaria • Zyxel България • http://www.zyxel.com/bg/bg/ Czech Republic • Zyxel Communications Czech s.r.o • http://www.zyxel.cz Denmark • Zyxel Communications A/S • http://www.zyxel.dk Estonia • Zyxel Estonia • http://www.zyxel.com/ee/et/ Finland •...
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• Zyxel Communications Poland • http://www.zyxel.pl Romania • Zyxel Romania • http://www.zyxel.com/ro/ro Russia • Zyxel Russia • http://www.zyxel.ru Slovakia • Zyxel Communications Czech s.r.o. organizacna zlozka • http://www.zyxel.sk Spain • Zyxel Communications ES Ltd • http://www.zyxel.es Sweden • Zyxel Communications • http://www.zyxel.se Switzerland •...
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Appendix A Customer Support • http://www.zyxel.ch/ Turkey • Zyxel Turkey A.S. • http://www.zyxel.com.tr • Zyxel Communications UK Ltd. • http://www.zyxel.co.uk Ukraine • Zyxel Ukraine • http://www.ua.zyxel.com Latin America Argentina • Zyxel Communication Corporation • http://www.zyxel.com/ec/es/ Brazil • Zyxel Communications Brasil Ltda.
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Appendix A Customer Support North America • Zyxel Communications, Inc. - North America Headquarters • http://www.zyxel.com/us/en/ Oceania Australia • Zyxel Communications Corporation • http://www.zyxel.com/au/en/ Africa South Africa • Nology (Pty) Ltd. • http://www.zyxel.co.za NSG Series User’s Guide...
The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of Zyxel Communications Corporation. Published by Zyxel Communications Corporation. All rights reserved.
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Appendix B Legal Information List of national codes COUNTRY ISO 3166 2 LETTER CODE COUNTRY ISO 3166 2 LETTER CODE Austria Liechtenstein Belgium Lithuania Bulgaria Luxembourg Croatia Malta Cyprus Netherlands Czech Republic Norway Denmark Poland Estonia Portugal Finland Romania France Serbia Germany Slovakia...
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Appendix B Legal Information Die folgende Symbol bedeutet, dass Ihr Produkt und/oder seine Batterie gemäß den örtlichen Bestimmungen getrennt vom Hausmüll entsorgt werden muss. Wenden Sie sich an eine Recyclingstation, wenn dieses Produkt das Ende seiner Lebensdauer erreicht hat. Zum Zeitpunkt der Entsorgung wird die getrennte Sammlung von Produkt und/oder seiner Batterie dazu beitragen, natürliche Ressourcen zu sparen und die Umwelt und die menschliche Gesundheit zu schützen.
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Appendix B Legal Information Environmental Product Declaration NSG Series User’s Guide...
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North American products. Trademarks ZyNOS (Zyxel Network Operating System) and ZON (Zyxel One Network) are registered trademarks of Zyxel Communications, Inc. Other trademarks mentioned in this publication are used for identification purposes only and may be properties of their respective owners.
Index Index Internet access troubleshooting Internet Explorer access Java capturing packets permissions cellular JavaScripts status certifications viewing configuration information contact information LED troubleshooting cookies LEDs copyright logout Web Configurator current date/time customer support MAC address range device access troubleshooting managing the device good habits diagnostics model name...
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Index packet captures downloading files 27, 31 pop-up windows warranty problems note product registration Web Configurator access requirements supported browsers registration product reset RESET button screen resolution serial number client requirements encryption methods for secure Telnet how connection is established versions with Linux with Microsoft Windows...
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